-7+2(-x-21)=30

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Solution for -7+2(-x-21)=30 equation: 



-7+2(-x-21)=30

We move all terms to the left:

-7+2(-x-21)-(30)=0

We add all the numbers together, and all the variables

2(-1x-21)-7-30=0

We add all the numbers together, and all the variables

2(-1x-21)-37=0

We multiply parentheses

-2x-42-37=0

We add all the numbers together, and all the variables

-2x-79=0

We move all terms containing x to the left, all other terms to the right

-2x=79

x=79/-2

x=-39+1/2

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